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Help if you can
Posted: Sat Oct 28, 2006 3:51 pm
by s18022
I am building a gun (better refered to as a cannon sinse it is like 15ft long) that i need to get a valve for it, it is a 4inch * 5ft tank and a 2inch *8ft barrel And the hand valve i got doesn't work(no real suprise) but i was wondering if you thought that two sprincler valves would work. so it would break into 2 3/4 inch piches go to the valve and then go back to the barrel.
Thanks for any replies

Posted: Sat Oct 28, 2006 4:07 pm
by LucyInTheSky
You could use a 3" sprinkler valve
Posted: Sat Oct 28, 2006 4:09 pm
by s18022
Where would you get e 3 inch sprinkler valve cuz if you can i am there.
Thanks
Posted: Sat Oct 28, 2006 4:11 pm
by LucyInTheSky
Dont know were you get them, im from the uk so i dont use them but that BIG NASTY gun has 2 of them on.
Posted: Sat Oct 28, 2006 6:08 pm
by squeaks
ok, first of all, 3 inch sprinkler valves cost upwards of $400. Second, even 2 1" sprinklers would have constriction on your air flow. It's all about surface are of a circle, r^2pi. a 2 1" valves would have the surface area equivelant of 1/2 pi. A 2" valve would have the surface are of pi. So, what I'm suggesting is pay $120 for a 2 inch sprinkler, buy a supah/mauler valve, or make your own piston/diaphram valve.
Posted: Sat Oct 28, 2006 6:31 pm
by Velocity
squeaks wrote:ok, first of all, 3 inch sprinkler valves cost upwards of $400. Second, even 2 1" sprinklers would have constriction on your air flow. It's all about surface are of a circle, r^2pi. a 2 1" valves would have the surface area equivelant of 1/2 pi. A 2" valve would have the surface are of pi. So, what I'm suggesting is pay $120 for a 2 inch sprinkler, buy a supah/mauler valve, or make your own piston/diaphram valve.
<a href="
http://www.sprinkler.com/buy/item/irrit ... 0">Upwards of $400? I think not</a>
Posted: Mon Dec 25, 2006 10:57 pm
by c19o
make a piston valve